package com.miot.restapi.util;

import org.apache.commons.io.IOUtils;
import org.apache.http.HttpEntity;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.*;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.apache.http.message.BasicNameValuePair;

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URISyntaxException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;

/**
 * 基于HttpClient实现
 *
 * @author HUJIANQING
 */
public class HttpUtils {

    //    public static final String BASEURL = "http://127.0.0.1:8080/xxPlatform/";
    public static final String BASEURL = "";
    // 统一配置
    private static PoolingHttpClientConnectionManager connMgr;
    private static RequestConfig requestConfig;
    private static final int MAX_TIMEOUT = 7000;

    static {
        // 设置连接池
        connMgr = new PoolingHttpClientConnectionManager();
        // 设置连接池大小
        connMgr.setMaxTotal(100);
        connMgr.setDefaultMaxPerRoute(connMgr.getMaxTotal());

        RequestConfig.Builder configBuilder = RequestConfig.custom();
        // 设置连接超时
        configBuilder.setConnectTimeout(MAX_TIMEOUT);
        // 设置读取超时
        configBuilder.setSocketTimeout(MAX_TIMEOUT);
        // 设置从连接池获取连接实例的超时
        configBuilder.setConnectionRequestTimeout(MAX_TIMEOUT);
        // 在提交请求之前 测试连接是否可用
        configBuilder.setStaleConnectionCheckEnabled(true);
        requestConfig = configBuilder.build();
    }

    /**
     * 发送get请求不带参数
     *
     * @param url
     * @return
     */
    public static String sendGet(String url) {
        return sendGet(BASEURL + url, null, null);
    }

    /**
     * 发送get请求
     *
     * @param url
     * @param params
     * @return
     */
    public static String sendGet(String url, List params, Map<String, String> headers) {
        String resulrStr = null;
        StringBuffer parms = null;
        url = BASEURL + url;
        // 创建HttpClient对象
        CloseableHttpClient httpClient = HttpClients.createDefault();
        try {
            HttpGet httpGet = new HttpGet();
            if (params != null) {
                // 设置请求参数
                URIBuilder uriBuilder = new URIBuilder(url);
                uriBuilder.setParameters(params);
                // 创建GET请求方法的实例，并填充url
//            String encodeUrl = URLEncoder.encode(uriBuilder.build().toString(), "UTF-8");
                System.out.println("传入的参数是->" + params);
                httpGet = new HttpGet(uriBuilder.build());
            } else {
                httpGet = new HttpGet(url);
            }
            //
            if (headers != null && headers.size() > 0) {
                Set<Entry<String, String>> entrySet = headers.entrySet();
                for (Entry<String, String> entry : entrySet) {
                    httpGet.addHeader(entry.getKey(), entry.getValue());
                }
            }
//		httpGet.setConfig(requestConfig);

            // 发送（执行）请求
            CloseableHttpResponse response = httpClient.execute(httpGet);
            // 获取响应头、内容
            int statusCode = response.getStatusLine().getStatusCode();
            // 打印状态码
            if(statusCode != 200){
                return null;
            }
            System.out.println("执行状态码：" + statusCode);
            HttpEntity entity = response.getEntity();
            resulrStr = IOUtils.toString(entity.getContent(), "UTF-8");
            response.close();
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (URISyntaxException e) {
            e.printStackTrace();
        } finally {
            // 关闭连接释放资源
            try {
                httpClient.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return resulrStr;
    }

    /**
     * 发送post请求
     *
     * @param url
     * @param map
     * @return
     */
    public static String sendPost(String url, Map<String, String> map) {

        String resultStr = null;
        url = BASEURL + url;
        // 创建HttpClient对象
        CloseableHttpClient httpClient = HttpClients.createDefault();
        // 创建请求方法实例，填充url
        HttpPost httpPost = new HttpPost(url);
        httpPost.setConfig(requestConfig);
        // 设置请求参数（构造参数队列）
        List<NameValuePair> parmsForm = new ArrayList<NameValuePair>();
        for (Entry<String, String> entry : map.entrySet()) {
            parmsForm.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
        }
        UrlEncodedFormEntity entity;
        try {
            entity = new UrlEncodedFormEntity(parmsForm, "UTF-8");
            // 为方法实例设置参数队列实体
            httpPost.setEntity(entity);
            // 发送（执行）
            CloseableHttpResponse response = httpClient.execute(httpPost);
            // 获取状态码
            int statusCode = response.getStatusLine().getStatusCode();
            System.out.println("执行状态码：" + statusCode);
            // 获取响应内容
            HttpEntity httpEntity = response.getEntity();
            resultStr = IOUtils.toString(httpEntity.getContent(), "UTF-8");
            response.close();
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                httpClient.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return resultStr;
    }

    public static String sendPost(String url, List<NameValuePair> parmsForm) {

        String resultStr = null;
        url = BASEURL + url;
        // 创建HttpClient对象
        CloseableHttpClient httpClient = HttpClients.createDefault();
        // 创建请求方法实例，填充url
        HttpPost httpPost = new HttpPost(url);
        httpPost.setConfig(requestConfig);
        UrlEncodedFormEntity entity;
        try {
            entity = new UrlEncodedFormEntity(parmsForm, "UTF-8");
            // 为方法实例设置参数队列实体
            httpPost.setEntity(entity);
            System.err.println(parmsForm);
            // 发送（执行）
            CloseableHttpResponse response = httpClient.execute(httpPost);
            // 获取状态码
            int statusCode = response.getStatusLine().getStatusCode();
            System.out.println("执行状态码：" + statusCode);
            // 获取响应内容
            HttpEntity httpEntity = response.getEntity();
            resultStr = IOUtils.toString(httpEntity.getContent(), "UTF-8");
            response.close();
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                httpClient.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return resultStr;
    }

    /**
     * 发送put请求
     *
     * @param url
     * @param map
     * @return
     */
    public static String sendPut(String url, Map<String, String> map) {

        String resultStr = null;
        url = url + BASEURL;
        // 新建httpClient对象
        CloseableHttpClient httpClient = HttpClients.createDefault();
        // 创建请求方法实例并填充url
        HttpPut httpPut = new HttpPut(url);
        httpPut.setConfig(requestConfig);
        // 创建参数队列
        List<NameValuePair> parmsForm = new ArrayList<NameValuePair>();
        for (Entry<String, String> entry : map.entrySet()) {
            parmsForm.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
        }
        UrlEncodedFormEntity entity;
        try {
            entity = new UrlEncodedFormEntity(parmsForm);
            // 将参数加入方法实例
            httpPut.setEntity(entity);
            // 发送
            CloseableHttpResponse response = httpClient.execute(httpPut);
            // 获取状态码
            int statusCode = response.getStatusLine().getStatusCode();
            System.out.println(statusCode);
            // 获取响应内容
            HttpEntity httpEntity = response.getEntity();
            resultStr = IOUtils.toString(httpEntity.getContent(), "UTF-8");
            // 关闭响应
            response.close();
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                httpClient.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return resultStr;
    }

    /**
     * 发送delete请求
     *
     * @param url
     * @return
     */
    public static String sendDelete(String url) {

        String resultStr = null;
        url = url + BASEURL;
        // 创建httpClient对象
        CloseableHttpClient httpClient = HttpClients.createDefault();
        // 创建方法实例
        HttpDelete httpDelete = new HttpDelete(url);
        httpDelete.setConfig(requestConfig);
        // 执行
        try {
            CloseableHttpResponse response = httpClient.execute(httpDelete);
            // 获取响应状态码
            int statusCode = response.getStatusLine().getStatusCode();
            System.out.println(statusCode);
            // 获取响应内容
            HttpEntity entity = response.getEntity();
            resultStr = IOUtils.toString(entity.getContent(), "UTF-8");
            response.close();
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                httpClient.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return resultStr;
    }

}
